Slicing machine



May 3, 1932. J. VAN HOORN SLICING MACHINE Original Filed April 12, 1928Patented May 3, 1932 UNITED STATES PATENT OFFICE JETZE VAN HOORN, OFVOORIBURG, NETHERLANDS, ASSIGNOR TO U. S. SLIGING MACHINE COMPANY, OF LAFORTE, INDIANA, A CORPORATION OF INDIANA SLICING MACHINE Applicationfiled April 12, 1928, Serial No. 269,525, and. in Great Britain March23, 1927. Renewed February 18, 1931.

This invention relates to slicing machines of the type wherein acarriage, for carrying the substance to be sliced past the slicingknife, is arranged to reciprocate along one or I more stationary guidebars or rails mounted on the base of the machine.

In such machines, the guide bars or rails are apt to be soiled androughtened by the adhesion thereto of grease and small particles of thesubstance sliced, together with particles abraded during the grinding ofthe knife, whereby the operation of the machine is rendered moredifficult owing to the gradually in V creasing friction. V The object ofthis invention is to remove all liability of grease or grit beindeposited gn the actual guiding surfaces 0 the guide ars.

In accordance with the invention a slicing 29 machine of the typereferred to, in which the reciprocatory carriage is guided by one ormore slide members fixed thereto and slidably mounted on the guide baror bars, is characterized by the guide bar, or each guide bar,

being so made or constructed that the actual bearing surface or surfacesthereof is or are covered by or enclosed within the bar itself. Theguide bar, or each guide bar, may be either unitary or composite and ispreferably 30 formed with an internal guideway having a restrictedopening for the passage of a connection between the slide member, oreach of them, and the reciprocatory carriage. The construction is suchthat, although the said member or members can slide freely on thebearing surfaces, the latter are absolutely protected against the entryof foreign matters.

In order that the invention may be clearly understood, one embodimentthereof, chosen as an illustrative example, will now be described withreference to the accompanying drawings, in which Fig. 1 is an endelevation, with certain parts in section, ofa slicing machine Fig. 2 isa fragmentary sectional elevation at right angles to Fig. 1.

In the drawings, the numeral 1 denotes the base of the machine, 2denotes the carriage for carrying the substance to be sliced and 3denotes the circular slicing knife, which is rotatably mounted in abracket 1 secured to the base.

Two parallel guide bars 5, 6 are mounted on the base 1, lengthwisethereof. Each bar is circular in cross-section and is tubular, so as toprovide an internal guideway. which also is circular incross-section.The bars are supported at their ends by pillars .7 upstanding fromthe'base 1, each pillar being provided with a tubular sleeve'8 throughwhich one end of the relative guide bar passes. The bars are each formedat one end with a shoulder 9 and are internally screw-threaded at theother end to receive a cap 10, the shoulder 9 and cap 10 being adaptedto abut against the outer faces of the sleeves 8 for the purpose ofholding the bars rigidly in position. Each bar has cut in it an openingor slot 11, which extends along the bottom of the bar from a point nearthe internally screw-threaded end to the shouldered end, at which endthe slot is open. The sleeves 8 against which the shoulders 9 bear areformed with slots 11, adapted to register with the slots 11 at the openends thereof.

" Two round bearing blocks consisting of rods 12, 13 are slidablymounted in the guideways within the guide bars, and the rods 12, y

their shouldered ends, the extensions 14, 15 being passed through theslots 11, 12. The carriage 2 is then slid along the bars to its workingposition.

Cover-plates 16 may then be fitted on the shouldered ends of the guiderods to prevent the ingress of dust, dirt and the like.

The slicing machine shown is of the kind in which the carriage 2 isreciprocated past the rotary knife 3 by means of a flywheel 17 thecarriage being connected through the intermediary of a connecting rod18, a crank 19, a crankshaft 20 and bevel gearwheels 21, 22 to theflywheel shaft 23; This particular kind of machine hasbeenchosensimplyfor the purpose of illustration, and it will be apparent that theinvention may be applied to any of the other kinds of machines of thetype to which this invention relates. For in} stance, the carriage mightbe fitted with a handle by means of which it could be pushed and pulledpast the knife, the flywheel 17, gearwheel'22 and shaft 23 beingdispensed with and a flywheel being preferably secured to the crankshaft20.

Applicant does not wish to restrict himself to the use of a circular rod13 fitted in a corresponding recess such as is illustrated for it willbeapparent that other shapes of bearing members within the knowledge ofone skilled in the art may be used without departing from the spirit orscope of the invention, the formshownbeingused merely as an illustrationofthe preferred embodiment of the device. The important feature of theinvention is .that the guideways substantially enclose the bar attachedto the carriage. It is not even necessary that the slots be in thelowermost position as shown, itonly being necessary that the slots areso located as to prevent theaccumulation of dust, dirtand other foreignmatter thereon.

In a slicing machine fitted with guides for the reciprocatory carriageas hereinbefore set forth, any grease .or particles of meat or othersubstance likely to soil the guidingsurface of thesebars would bedeposited on the top and sides thereof and'would in no way affect theoperation of the machine.

I claim: 7

1. In combination with a slicing machine having a. reciprocable table, asupporting member formed with a longitudinally extending .recesstherein, a slide element mounted within said. recess, and'means attachedto'said table and slide element, said means extending under said memberand upward'throughsaid recess.

2. In combination with a slicing machine having a reciprocable table, aslide element attached to said table, and protecting means for saidelement, said means comprising an elongated stationary cover supportingsaid table and positioned over said slide element and extending betweensaid element and table to protect said slide when reciprocated in saidcover.

3. In combination with a slicing machine having a base and areciprocable table, a hollow tubular supporting member having a slot inthe bottom thereof communicating with the interior of said tubularmember, a cooperatin slide element mounted for reciprocation within saidtubular member, and a rigid connection between said tableandslideelement, said connection extending beneath said tubular member andthrough said slot to said slide element.

4. In combination with a slicing machine having abase-and a reciprocabletable, a plurality of slide elements, a pair of cover members on saidbase within which said slide membersare mounted for reciprocation, andconnecting meansbetween'said slide elements and table extending beneathsaid cover members to said slide elements. 7

A slicing machine comprising a reciprocable table, supporting meanstherefor comprising acovering guide,and a slide element connected tosaid table and associated with Said covering guide to slide along and beguided by the latter while covered thereby.

6. A slicing machine comprisingareciprocable table, supporting mechanismtherefor comprising a-covering member having a longitudinal recesstherein, a slide elementconnected to said table to move therewith andslidable within and guided by said recessed member while coveredthereby, and .means connecting said slide element and table to cause theslide element to move with the table as aforesaid.

7. A slicing machine comprising a supporting member and a reciprocatingmember mounted thereon by means of arecessed guide element on one ofsaid members having a longitudinal slot therein opening downwardly, anda'co-operating slide element on the other of said members adapted to beguided within the recessed guide and to .slide relatively thereto.

-8. A slicing machine comprising a supporting member and a reciprocatorymember mounted thereon by means of a plurality of recessed guidingelements on one of said members each having a longitudinal slot thereinopeningdownwardlyand a co-operating slide element on the other of saidmembers for each of said guiding elements adapted to be guided therebyand slide relatively thereto.

9. A slicing'machine comprising a reciprocable table, supporting meanstherefor comprising a slide element, a stationary cover for guiding saidelement and within which said element is reciprocable by slidingmovements, said cover extending between said slide element and table,and means connectingsaid slide element and table.

10. A slicing machine comprising-a reciprocable table, a supporttherefor comprising a slide element connected to said table, a tubularguide adapted to cover said slide element to protect it from theaccumulation of foreign matter thereon and having an elongated recesstherein Within which the slide element is guided.

In testimony whereof I have signed my name to this specification on this27th day of March, A. D. 1928.

JETZE VAN HOORN.

